Securing device.



No. 801,053. PATENTED OCT. 3, 1905.2 G. D. WATSON.

SECURING DEVICE.

APPLICATION FILED FEB.3,1905.

ATTORNEYS UNITED STATES PATENT OFFICE.

GEORGE DILLIE WATSON, OF PARKERSBURG, WEST VIRGINIA, ASSIGNOR OF ONE-HALF TO WILLIAM H. KESSELMAN, OF PARKERSBURG, WEST VIRGINIA.

SECURING DEVICE.

Specification of Letters Patent.

Patented. Oct. s, 190 5.

To all whom it may concern:

Be it known that I, GEORGE DILLIE WATSON, a citizen of the United States, and a resident of Parkersburg, in the county of Wood and State of West Virginia, have invented a new and Improved Securing Device, of which the following isafull, clear, and exactdescription.

My invention relates to devices for securing or anchoring such elements as the tubes of oil-wells and the like. Its principal objects are to provide a device of this character which may be brought into engagement with or released vfrom the well-casing at any position thereon.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both views.

Figure 1 is a vertical axial section through a well, in connection with which is shown a tube carrying one embodiment of my invention, and Fig. 2 is a horizontal section on the line 2. 2 of Fig. 1.

A well-casing is designated by the character A, and passing through it is shown a rod or well-tube B. Secured upon the tube, conveniently by set-screws 10, is a supporting member, which is shown as in the form of a casing 11, having a chamber 12 encircling the tube and approaching in external diameter the inner diameter of the well-casing. The chamber is open at its upper end and may be closed by a separable portion or head 13, preferably threaded into the support-opening. W'ithin the chamber is a spring 15, which, as illustrated, is of spiral form, surrounding the tube and having its lower end resting upon the bottom of the chamber and its upper extremity contacting with the head. Rising from the head above the support are connecting members or arms 15 (here shown as two in number) and carrying at their upper ends opposite locking members 16 16, each of which is provided with teeth 17 adjacent to the inner surface of the well-casing, said teeth being downwardly inclined or adapted to offer resistance to movement in this direction. The inner adjacent sides of the locking members have upwardly-diverging faces 18, with which contact oppositely-inclined faces 19 upon the periphery of an expanding or actuating member 20. In the present instance this actuating member is of conical form and is retained in place upon the tube which it surrounds by means of collars 21 21, fixed to said tube above and below it. Each of the arms 15 is provided with an engaging projection, preferably consisting of a wheel 22, journaled in a yoked portion 23 of the arm and having a reduced periphery which normally projects beyond the edges of the support and locking members into engagement with the wellcasing.

In use the tube is first introduced into the well for a certain distance and then my improved securing device applied thereto in a manner which will be evident from the above description. Another length of the tubing is then added and the whole lowered into the well, the securing device moving out of contact with the casing, except forthe engaging wheels, which roll easily along it. When the requisite length has been inserted and it is desired to anchor it in place, the tube is turned to unscrew the support from the head, the rotation of the latter element being prevented by the engagement of the wheels with the casing. When the support and head are separated by this operation, the spring within the chamber expands and pressing against the head forces the locking members up the incline of the actuating member, bringing the teeth into cooperation with the casing. This secures the tube and easing together, the weight of the former element, by virtue of the direction of inclination of the contactfaces, tending to increase the grip of the teeth. If it is desired to withdraw the rod, it is only necessary to pull it upwardly, this acting to remove the pressure of the actuating member from the locking members and allowing the downwardly-inclined teeth to slip over the surface of the casing. In the upward as in the downward movement the wheels roll along without offering appreciable resistance, they only acting to prevent rotary movement of the arms.

My improved securing device allows the tube to be supported at any point along its length, thus distributingits weight and obviating the danger of breakage, which is liable to occur if the tube rests upon its lower end, and thus supports the entire weight. In withdrawing the tube from the well the device as long as it is within the casing acts as a safetycatch, since if the tackle breaks and the tube falls the locking members will be set and downward movement promptly arrested. After the device has been removed the weight of the tube remaining in the well is not suliicient to cause serious damage if it chances to fall.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent 1. The combination with a rod, of a support fixed upon the rod, an actuating member secured upon the rod, a locking member movable upon the actuating member, and separable connections between the support and locking member.

2. The combination with a rod, of a support fixed upon the rod, an actuating member secured upon the rod, a locking member movable upon the actuating member, separable connections between the support and locking member, and a spring cooperating with the support and acting to force the locking member over the actuating member.

3. The combination with a rod, of a support fixed upon the rod, an actuating member secured upon the rod, a locking member movable upon the actuating member, separable connections between the support and locking member, and means for preventing the rotation of the connections.

4C- The combination with a rod, ofa support fixed upon the rod, an actuating member secured upon the rod and having an inclined face, a locking member movable over said inclined face, and separable connections between the support and locking member.

5. A securing device comprising a supporting member having a portion separably attached thereto, an arm extending from the separable portion, a locking member carried by the arm, and an actuating member cooperating with the locking member.

6. A securing device comprising a sup porting member having a portion threaded thereon, an arm extending from the threaded portion, a locking member carried by the arm, and an actuating member cooperating with the locking member.

7. A securing device comprisingasupporting member having a portion separably attached thereto, an arm extending from the separable portion, an engaging projection carried by the arm, a locking member carried by the arm, and an actuating member cooperating with the locking member.

8. A securing device comprising a supporting member having a portion separably attached thereto, an arm extending from the separable portion, a roll rotatable upon the arm and having a reduced periphery projecting beyond the supporting member and looking member, a locking member carried by the arm, and an actuating member cooperating with the locking member.

9. A securing device comprising a supporting member having a portion separably attached thereto, a locking member carried by the separable portion and having an inclined face, and an actuating member havingan oppositely-inclined face cooperating with the locking member.

10. A securing device comprising a supporting member having a chamber and a separably-attached portion, a spring situated within the chamber and exerting its force upon the separable portion, a locking member carried by the separable portion, and an actuating member cooperating with the looking member.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE DILLIE XVATSON.

Witnesses:

WM. H. KessELMAN, A. E. CAMPBELL. 

